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Imported bearing maintenance needs to deal with the damage caused by the situation-Industry News
The maintenance of imported bearings needs to deal with the damage caused by the dovetail guide sound of imported bearings and the control measures. The raceway sound is a kind of slippery and continuous transmission when the unilateral bearing is running and the reversing body of the non-standard bearing is turned over on the surface of the dovetail guide rail. The sound is the unique basic sound that all flip bearings will produce. The general imported bearing sound is the sound of the dovetail rail plus other sounds. The noise of the ball bearing dovetail guide is irregular, its frequency is above 1000Hz, its main frequency does not change with the speed ratio, but its total noise coefficient increases with the increase of the speed ratio. For bearings with high raceway noise, the noise coefficient of raceway noise decreases with the increase of viscosity, but when the viscosity of bearings with low raceway noise increases to more than 20mm^2/s, the noise coefficient increases to a certain extent. from decreasing to increasing. The higher the rigidity of the housed bearing, the lower the overall noise figure. When the axial backlash is too small, with the reduction of the axial backlash, the total noise figure and dominant frequency of the drum sound greatly increase. The way to control the sound of the rollers is to use low noise imported bearings, i.e. small corrugated bearings, and carefully select the application criteria. The sound of drums often harms the noise of all machinery and equipment, and reducing the sound of dovetail guide rails can reduce the noise of all machinery and equipment. The impact sound of the overturning body and its control measures When the large-sized ball bearing or cylindrical roller bearing runs at low speed under pure axial load, due to the small centripetal force of the overturning body, the overturning body in the non-load area hits the ball bearing or dovetail guide rail, and transmits noise. But as the speed ratio increases, this noise disappears. The control measures for the impact sound of the inverting body are to moderately reduce the axial side clearance, apply an effective structure, and use imported bearings with smooth ball bearings as raw materials.
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